From: Juergen Gross <jgross@suse.com>
To: xen-devel@lists.xenproject.org
Cc: Juergen Gross <jgross@suse.com>,
sstabellini@kernel.org, wei.liu2@citrix.com,
George.Dunlap@eu.citrix.com, andrew.cooper3@citrix.com,
ian.jackson@eu.citrix.com, tim@xen.org, jbeulich@suse.com
Subject: [PATCH 0/2] xen: modify dom0 interface for obtaining memory map
Date: Mon, 5 Dec 2016 17:34:07 +0100 [thread overview]
Message-ID: <20161205163409.16714-1-jgross@suse.com> (raw)
Today's interface to get the machine memory map in dom0 requires to
know in advance how large the final map will be. There is however no
way to either get only a part of the memory map or to ask the
hypervisor about its size.
This patch set enhances the XENMEM_machine_memory_map hypercall to
solve both issues by returning only a partial memory map in case the
supplied buffer was too small and to return the needed number of
entries if no buffer is being supplied.
Juergen Gross (2):
xen/x86: return partial memory map in case of not enough space
xen/x86: add a way to obtain the needed number of memory map entries
xen/arch/x86/mm.c | 52 +++++++++++++++++++++++++++------------------
xen/include/public/memory.h | 4 ++++
2 files changed, 35 insertions(+), 21 deletions(-)
--
2.10.2
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next reply other threads:[~2016-12-05 16:34 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-05 16:34 Juergen Gross [this message]
2016-12-05 16:34 ` [PATCH 1/2] xen/x86: return partial memory map in case of not enough space Juergen Gross
2016-12-05 17:17 ` Jan Beulich
[not found] ` <5845AF3E020000780012541F@suse.com>
2016-12-06 7:43 ` Juergen Gross
2016-12-06 8:15 ` Jan Beulich
[not found] ` <584681CA020000780012577A@suse.com>
2016-12-06 8:33 ` Juergen Gross
2016-12-06 8:51 ` Jan Beulich
[not found] ` <58468A1202000078001257BE@suse.com>
2016-12-06 9:44 ` Juergen Gross
2016-12-06 9:51 ` Jan Beulich
2016-12-05 16:34 ` [PATCH 2/2] xen/x86: add a way to obtain the needed number of memory map entries Juergen Gross
2016-12-05 16:39 ` [PATCH 0/2] xen: modify dom0 interface for obtaining memory map Andrew Cooper
2016-12-05 16:43 ` Juergen Gross
2016-12-05 17:06 ` Andrew Cooper
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